1. HSG5 Status Paper/note circulation: Reading of draft 1on 24 th April: – Talks by Giacinto and Pippa Inputs for combination: separated WH/ZH for vvbb next day or two Need to complete description of statistical treatment in support material Other channels: Walking technicolor analysis could be done quickly from ZH analysis and H->ZZ->llqq – Nice results shown last week: https://indico.cern.ch/conferenceDisplay.py?confId=18728 3 Boosted H->bb ? – Pushing to get this going faster… – Starting weekly working meetings – CMS will have analysis for ICHEP – Boosted Z->bb too far away – MC description very difficult (Py vs Hwg, LO vs NLO, etc) But trigger for 2012 ok for now ttH working for 2011 analysis in mid May – Starting weekly working meetings – In parallel to vector-like quarks – Should request E.Board soon: N.Wermes, V.Martin, T.Golling, M.Corradi for existing VLQ ed.board WZ->lνbb: use as a calibration for H->bb mass peak – Proposed by CERN group for ICHEP Internal Note Note started, but only skeleton: ATL-COM-2012- 416ATL-COM-2012- 416 Serious resistance from the group last week Personally my main problem was the timescale Strongest point raised was that it prevents us from exploring the potential in the analyses To do for WH/ZH: – Fits to the signal and backgrounds in the limit setting – New jet calibration – New b-tagging corrections (top SFs in ~1 month) – Further suppression of top background – Improving the theory description of the data and systematics – etc But… we are dominated by systematics! – Big effect from higher pileup expected: – Forward jet veto and exclusive jet categories – Likely to need changes to jet selection – B-tagging working point may need to change – We won't have until sometime in May – Need to explore new discriminating variables Other analyses: hope to have ttH and boosted H- >bb – Not well defined yet; need to concentrate on 2011 data before going to the more complicated conditions in 2012 Ricardo GoncaloHiggs subconveners meeting - 16/4/20121

2. BACKUP: HSG5 Status Last Week Paper/note circulation: Reading of draft 1on 24 th April – Presentation by Giacinto Inputs for combination ready Need to complete description of statistical treatment in support material Internal Note Note started, but only skeleton: – ATL-COM-2012-416 ATL-COM-2012-416 ttH working for 2011 analysis in mid May – In parallel to vector-like quarks – Request E.Board? N.Wermes, V.Martin, T.Golling, M.Corradi for existing VLQ ed.board Boosted H->bb ? – Pushing to get this going faster… – CMS will have analysis for ICHEP – Boosted Z->bb too far away – MC description very difficult (Py vs Hwg, LO vs NLO, etc) But trigger for 2012 ok for now Walking technicolor analysis could be done quickly from ZH analysis – But may be better in H->ZZ->llqq 2012 MC: … ongoing … Backgrounds need Z->νν Dibosons seem to small (and need Z->νν) Will try to move as much as possible to AFII But boosted analysis may suffer from this CP involvement Trigger – several points of contact: – ννbb: Yoshikazu Nagai (CPPM) and Kenji Kiuchi (Tsukuba) – Boosted Z->bb: Luke Lambourne (UCL) – VBF: Eric Ouellette Jets: – Major systematic uncertainty – Need to: Move to new JES Use b-jet semileptonic correction – b-JES?... presentation by D.L.Mateos in HSG5 – Possible involvement in work on b-jet resolution B-tagging: – Major systematic uncertainty: – Improvement expected from top b-tagging analysis – unknown timescale – Possible involvement through new method using tt (C.Schiavi) Ricardo GoncaloHiggs subconveners meeting - 16/4/20122